Means for regulating steam-heating systems.



L. G. 0RD. MEANS FOR REGULATING STEAM HEATING SYSTEMS.

APPLICATION FILED AUG. 3, 1910. 1,108,2 1 8. Patented Aug. 25, 1914,

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THE NORRIS FEYERS co. PHOTO-LITHO, WASHINGTON. u, c

UNITED STATES PATENT OFFICE.

LEWIS CRAVEN 0RD, OF MONTREAL,

QUEBEC, CANADA, ASSIGNOR TO CANADIAN GOLD CAR HEATING & LIGHTING COMPANY, LIMITED, OF MONTREAL, CANADA, A COR- PORATION OF CANADA.

MEANS FOR REGULATING STEAIVI-HEATING SYSTEMS.

Specification of Letters Patent.

Application filed August 3, 1910.

T 0 all whom it may concern Be it known that I, Lnwrs Cnavniv Om), of the city of Montreal, Province of Quebec, Canada, have invented certain new and useful Improvements in Means for Regulating Steam-Heating Systems; and 1' do hereby declare that the following is a full, clear, and exact description of the same.

My invention has for its object to enable the heat radiating properties to be regulated without varying the steam pressure.

The invention consists of a steam heating system regulator utilizing a variable overflow level of the water of condensation in the heat radiator to vary the heat radiating surface and thereby regulate the radiating properties of the system.

For full comprehension, however, of my invention reference must be had to the ac companying drawings forming a part of this specification, in which similar reference characters indicate the same parts and wherein- Figure 1 is a side elevation of a railway car heater with my invention applied thereto; Fig. 2 is a plan view thereof; Fig. 3 is a detail longitudinal vertical sectional view of my improved regulator; Fig. 4 is a plan view thereof partly broken away; and Figs. 5 and 6 are transverse horizontal sectional views thereof taken respectively on lines A A and B B Fig. 3 looking in the direction of the arrows.

My improved regulator comprises a stand pipe I) screwed at its lower end into a casting 0 the lower face of which forms a.valve seat 0 and having a pipe connection (Z to the lower end of the radiator, such pipe including a downwardly offset portion 6 forming a water pocket acting as a steam trap. This casting 0 is connected by a union nut g to a valve casing it from which a waste pipe 2' leads to a thermostatic steam trap j, the upper end of the stand pipe being screwed into a cap 70 from which a pipe Z leads to the top of the radiator. A flat rotary valvular disk m is located within the upper portion of the casing and has a single segmental port 41. cut vertically therethrough, such valve being operated by a valve shaft 0 extending upwardly through the stand pipe and cap 70 in the top of which latter it is rotatably held by a bonnet to be presently described in detail) screwed therein, the upper'portion of and corresponding the stem having a rigid collar 0 and its upper end a handle 32 fixed thereon.

The valve seat has a series of preferably four ports 7 s t 26 arranged in a segmental series with which the valvular port n is adapted to coincide and open all the ports 1' s t u at the same time or any desired number of them. These ports serve as the dis charge for the water of condensation and in order to afford means permitting constant flow during condensation and at the same tlme provide a series of difierent fixed discharge levels, a series of preferably three vertical tubes 2, 3 and l of different lengths are inserted into the upper ends of the ports .9 and a respectively and soldered or otherwise fastened in place. The different angular positions of the valve are indicated by graduations 5 on the cap is and an indicator 6 formed by an extension 7 of the handle carrying a spring and ball, 8 and 9 respectively, coacting with indentations in the cap with the graduations 5. The handle and valve are with this means set to secure the desired level of the water of condensation in the stand pipe and radiator. A spring 10 keeps the valve m on its seat and between the spring and valve is located a cap 12 with a central pointed bearing teat l3 seated on a conical-bearing 14 on the underside of the valve. This cap prevents twist-ing and wear of the spring when the valve is operated.

The bonnet before mentioned comprises a cylindrical portion 13 screwed into a tapped opening in the cap 7.: and formed with a circular recess in in its underside to accommodate the collar 0, the upper end of the opening being enlarged as at 15 to receive a circumferential flange 16 formed on the bonnet and having a hexagonal upper face to afford means for screwing the bonnet into place, the bonnet being seated by the underside of the flange resting upon the shoulder presented by the enlarged opening 15. A stufiing box is formed by a cylindrical projection from the upper end of the bonnet which encircles the shaft, the packing 18 being held in place by a bushing 19 and gland nut 20. To prevent unseating of the valve an annular boss 19 is formed integrally with the seat and extends upwardly encircling the stem proper 2O ofthe valve and supporting a valve operating shaft 0 the lower end whereof has a square recess receiving a square end of the valve stem. The upper end of the shaft is formed with a square end 2:. projecting through a square opening 23 in the handle 7), the collar 0 preventing the stem from being lifted. This particular construction and arrangement of the valve actuating mechanism precludes the possibility of the valve being depressed from its sea t or the shaft lifted from operative relation with the valve stem proper.

ln-the drawing my invention is illustrated applied to the heating of a water system, such for instance as is suitable for car heating, while the heating coil is indicated at 25, a water jacket-for inclosing such heating coil at 26, flow and return steam pipes (Z and Z respectively connecting as before stated the regulator to'the heating coil, and flow and return water pipes27 and 28 respectively connecting the water jacket to the car heating pipes. Stops 1 0 and ll limit the move- 11161lt0f the valve. The steam is supplied by pipe QO'branched'as at 31 and 32 and leading to the tops of the controller and heating coil respectively, and the pipe (Z serves as the return connection from the heating coil to the controller.

Operation: The water of condensation deposited in the coil flows therefrom through pipe (Z into the bottom of the stand pipe above the valve seat 0. When the con troller handle in position marked Full the port 1' is open and all water of condensation flows from the trap to waste. lVhen the handle is in position marked port 9 is closed and the water of condensation to escape must accumulate in the stand pipe and heating coil until it reaches a level permitting it to overflow the tube 2, the radiating surface of the heating coil being reduced in proportion; increased levels and corresponding decreased heatingsurfaces are obtained by turning the valve to close the tubes Q'or 3 in the latter case the maximum water level and minimum heating surface are secured, but the stops i0 and 1-1 prevent the tube 4: being closed thus insuring a constant outlet for the water of condensation and preventing the blocking of the radiator therewith. In this manner variations of the heating surface may be made, and as there is always a free discharge opening from the regulator the flow of the surplus water of condensation after it reaches the required level is uninterrupted, and the free access at all times of either water of condensation or steam to the ther mostatic trap, prevents freezing.

\Vhat I claim is as follows The combination with a steam heating system and a heating coil therein, of a stand pipe connected to the heating coil and adapted to'have the water of condensation escape therethrough, a conduit leading from the heating coil to the stand pipe and having a downwardly oifset portion providing a"water pocket therein, means providing the stand pipe with a plurality of discharge openings arranged at diiferent levels for the water of condensation, and means whereby the water ofcondensation may be caused to collect in the said stand pipe and rise therein to any one of such discharge openings.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

LEWIS CRAVEN'ORD.

'lVitnesses lViLLIAM P. MoFina'r, JOHN A. OKEEFE.

Copiea of this patent may be obtained forfive cents each, by addressing the Commissioner of. Patents,

Washington, D. G. 

